CVE-2022-48873 (GCVE-0-2022-48873)

Vulnerability from cvelistv5 – Published: 2024-08-21 06:10 – Updated: 2026-08-05 08:52
VLAI
Title
misc: fastrpc: Don't remove map on creater_process and device_release
Summary
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Don't remove map on creater_process and device_release Do not remove the map from the list on error path in fastrpc_init_create_process, instead call fastrpc_map_put, to avoid use-after-free. Do not remove it on fastrpc_device_release either, call fastrpc_map_put instead. The fastrpc_free_map is the only proper place to remove the map. This is called only after the reference count is 0.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 , < 4b5c44e924a571d0ad07054de549624fbc04e4d7 (git)
Affected: b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 , < 193cd853145b63e670bd73740250983af1475330 (git)
Affected: b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 , < 1b7b7bb400dd13dcb03fc6e591bb7ca4664bbec8 (git)
Affected: b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 , < 35ddd482345c43d9eec1f3406c0f20a95ed4054b (git)
Affected: b49f6d83e290f17e20f4e5cf31288d3bb4955ea6 , < 5bb96c8f9268e2fdb0e5321cbc358ee5941efc15 (git)
Affected: aaf5aa44934ad069cac805923c49f6968b9a0d49 (git)
Affected: 5.1.6 , < 5.2 (semver)
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Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.230 , ≤ 5.4.* (semver)
Unaffected: 5.10.165 , ≤ 5.10.* (semver)
Unaffected: 5.15.90 , ≤ 5.15.* (semver)
Unaffected: 6.1.8 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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Esto se llama solo despu\u00e9s de que el recuento de referencias sea 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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-04T13:46:30+00:00",
      "cve": "CVE-2022-48873",
      "id": "CVE-2022-48873",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: misc: fastrpc: Don\u0027t remove map on creater_process and device_release",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48873.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-08-05T01:16:49Z",
      "cve": "CVE-2022-48873",
      "id": "CVE-2022-48873",
      "initial_release_date": "2024-08-22T03:29:36Z",
      "product_status:known_affected": "310",
      "product_status:known_not_affected": "142",
      "product_status:recommended": "540",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-48873",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-48873.json",
      "version": "52"
    },
    "vulnrichment": {
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Unprivileged apps on Qualcomm Android can obtain the device fd through the DSP HAL.\\nAC:L - An attacker who can open the device fully controls map creation, INIT_CREATE error paths (allocation/invoke failure or timeout), and device_release, so the UAF is reliably triggerable without depending on conditions outside their influence.\\nPR:L - The driver is designed for untrusted apps on non-secure fastrpc nodes, and Android apps can obtain the fd via IDspService/DSP HAL without being root. No real root/init-namespace capability is required.\\nUI:N - Exploitation needs only the attacker\\u2019s own open/ioctl/close sequence; no victim action is required.\\nS:U - Impact is kernel memory corruption and local privilege escalation within the same OS security authority, not a VM/IOMMU sandbox escape.\\nC:H - Use-after-free of fastrpc_map objects enables heap reuse and arbitrary kernel read primitives per standard UAF exploitation.\\nI:H - The same UAF enables heap spraying and arbitrary write/control-flow hijacking in the kernel.\\nA:H - Use-after-free of list-linked map objects can cause kernel oops/panic even without full exploitation.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b49f6d83e290f17e20f4e5cf31288d3bb4955ea6\", \"lessThan\": \"4b5c44e924a571d0ad07054de549624fbc04e4d7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b49f6d83e290f17e20f4e5cf31288d3bb4955ea6\", \"lessThan\": \"193cd853145b63e670bd73740250983af1475330\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b49f6d83e290f17e20f4e5cf31288d3bb4955ea6\", \"lessThan\": \"1b7b7bb400dd13dcb03fc6e591bb7ca4664bbec8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b49f6d83e290f17e20f4e5cf31288d3bb4955ea6\", \"lessThan\": \"35ddd482345c43d9eec1f3406c0f20a95ed4054b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b49f6d83e290f17e20f4e5cf31288d3bb4955ea6\", \"lessThan\": \"5bb96c8f9268e2fdb0e5321cbc358ee5941efc15\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"aaf5aa44934ad069cac805923c49f6968b9a0d49\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.1.6\", \"lessThan\": \"5.2\", \"versionType\": \"semver\"}], \"programFiles\": [\"drivers/misc/fastrpc.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.230\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.165\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.90\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.2\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/misc/fastrpc.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4b5c44e924a571d0ad07054de549624fbc04e4d7\"}, {\"url\": \"https://git.kernel.org/stable/c/193cd853145b63e670bd73740250983af1475330\"}, {\"url\": \"https://git.kernel.org/stable/c/1b7b7bb400dd13dcb03fc6e591bb7ca4664bbec8\"}, {\"url\": \"https://git.kernel.org/stable/c/35ddd482345c43d9eec1f3406c0f20a95ed4054b\"}, {\"url\": \"https://git.kernel.org/stable/c/5bb96c8f9268e2fdb0e5321cbc358ee5941efc15\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmisc: fastrpc: Don\u0027t remove map on creater_process and device_release\\n\\nDo not remove the map from the list on error path in\\nfastrpc_init_create_process, instead call fastrpc_map_put, to avoid\\nuse-after-free. Do not remove it on fastrpc_device_release either,\\ncall fastrpc_map_put instead.\\n\\nThe fastrpc_free_map is the only proper place to remove the map.\\nThis is called only after the reference count is 0.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.230\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.165\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.90\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.8\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.1.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:52:44.074Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48873\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:52:44.074Z\", \"dateReserved\": \"2024-07-16T11:38:08.921Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-21T06:10:04.024Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.